`gnutls_x509_ext_import_key_usage` ( 3 )

Функции API (API function)

Имя (Name)

gnutls_x509_ext_import_key_usage - API function

Синопсис (Synopsis)

#include <gnutls/x509-ext.h>

       int gnutls_x509_ext_import_key_usage(const gnutls_datum_t * ext,
       unsigned int * key_usage);

Аргументы (Arguments)

const gnutls_datum_t * ext
                   the DER encoded extension data

       unsigned int * key_usage
                   where the key usage bits will be stored

Описание (Description)

This function will return certificate's key usage, by reading the
       DER data of the keyUsage X.509 extension (2.5.29.15). The key
       usage value will ORed values of the:
       GNUTLS_KEY_DIGITAL_SIGNATURE, GNUTLS_KEY_NON_REPUDIATION,
       GNUTLS_KEY_KEY_ENCIPHERMENT, GNUTLS_KEY_DATA_ENCIPHERMENT,
       GNUTLS_KEY_KEY_AGREEMENT, GNUTLS_KEY_KEY_CERT_SIGN,
       GNUTLS_KEY_CRL_SIGN, GNUTLS_KEY_ENCIPHER_ONLY,
       GNUTLS_KEY_DECIPHER_ONLY.

Возвращаемое значение (Return value)

the certificate key usage, or a negative error code in case of
       parsing error.  If the certificate does not contain the keyUsage
       extension GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.

Сообщение об ошибках (Reporting bugs)

Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

Смотри также (See also)

The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

https://www.gnutls.org/manual/

Исходный текст на man7.org

gnutls_x509_ext_import_key_usage ( 3 )